<template>
  <view v-if="goods_info.goods_name" class="goods-detail-container">
    <swiper :indicator-dots="true" :autoplay="true" :interval="3000" :duration="1000" :circular="true">
      <swiper-item v-for="(item,i) in goods_info.pics" :key="i">
        <image :src="item.pics_big" @click="preview(i)"></image>
      </swiper-item>
    </swiper>
    <!-- 商品信息区域 -->
    <view class="goods-info-box">
      <!-- 商品价格 -->
      <view class="price">￥{{goods_info.goods_price}}</view>
      <!-- 商品主题区域 -->
      <view class="goods-info-body">
        <!-- 商品名称  -->
        <view class="goods-name">{{goods_info.goods_name}}</view>
        <!-- 收藏 -->
        <view class="favi">
          <uni-icons type="star" size="30"></uni-icons>
          <text>收藏</text>
        </view>
      </view>
      <!-- 运费 -->
      <view class="yf">快递:免运费</view>
    </view>
    <!-- 商品详情信息 -->
    <rich-text :nodes="goods_info.goods_introduce"></rich-text>
    <!-- 商品导航组件 -->
    <view class="goods-nav">
      <uni-goods-nav :fill="true"  :options="options" :buttonGroup="buttonGroup"  @click="onClick" @buttonClick="buttonClick" />
    </view>
  </view>
</template>

<script>
  import { mapState ,mapMutations,mapGetters } from 'vuex'
  export default {
      data() {
        return {
          goods_info:{},
          options: [{
                icon: 'shop',
                text: '店铺',
              }, {
                icon: 'cart',
                text: '购物车',
                info: 2,
                infoBackgroundColor:'#ff0000',
                infoColor:"white"
              }],
                buttonGroup: [{
                  text: '加入购物车',
                  backgroundColor: '#ff0000',
                  color: '#fff'
                },
                {
                  text: '立即购买',
                  backgroundColor: '#ffa200',
                  color: '#fff'
                }]
            };
       },
    watch:{
      total:{
        handler(newVal) {
          const findResult = this.options.find(x => x.text ==='购物车')
          
          if(findResult) {
            findResult.info =newVal
            }
          },
          immediate:true
        }
    },
    onLoad(options){
     const goods_id= options.goods_id
     this.getGoodsDetail(goods_id)
    },
    methods:{
      ...mapMutations('m_cart',['addToCart']),
      async getGoodsDetail(goods_id){
        const {data:res} = await uni.$http.get('/api/public/v1/goods/detail',{goods_id})
        if( res.meta.status !==200) return uni.$showMsg()
       res.message.goods_introduce = res.message.goods_introduce.replace(/<img /g ,'<img style="display:block;" ').replace(/webp g/,'jpg')
        this.goods_info = res.message
      },
      preview(i) {
        // 调用 uni.previewImage() 方法预览图片
        uni.previewImage({
           // 预览时，默认显示图片的索引
          current:i,
          // 所有图片 url 地址的数组
          urls:this.goods_info.pics.map(x =>x.pics_big)
        })
      },
       onClick (e) {
      	    if (e.content.text === "购物车") {
              uni.switchTab({
                url:"/pages/cart/cart"
              })
            }
      	},
      	  buttonClick (e) {
      	    if(e.content.text === '加入购物车'){
          // 2. 组织一个商品的信息对象
              const goods = {
                 goods_id: this.goods_info.goods_id,       // 商品的Id
                 goods_name: this.goods_info.goods_name,   // 商品的名称
                 goods_price: this.goods_info.goods_price, // 商品的价格
                 goods_count: 1,                           // 商品的数量
                 goods_small_logo: this.goods_info.goods_small_logo, // 商品的图片
                 goods_state: true                         // 商品的勾选状态
              } 
                    // 3. 通过 this 调用映射过来的 addToCart 方法，把商品信息对象存储到购物车中
                 this.addToCart(goods)
            }
      	  }
        },
    computed :{
      ...mapState('m_cart' ,['cart']),
      ...mapGetters('m_cart' ,['total']),
    },
  }
</script>

<style lang="scss">
  swiper {
    height: 750rpx;
    
     image {
       width: 100%;
       height: 100%;
     }
  }
  .goods-info-box {
    padding: 10px;
    padding-right: 0;
    .price {
      color:#c00000;
      font-size: 12px;
      margin: 10px 0px;
    }
    .goods-info-body {
      display: flex;
      justify-content: space-between;
      .goods-name {
        font-size: 13px;
        padding-right: 10px;
      }
      
      .favi {
        width: 120px;
        font-size: 12px;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        border-left: 1px solid #E5E5E5;
        color: gray;
      }
    }
    // 运费
    .yf {
      margin: 10px 0;
      font-size: 12px;
      color: gray;
    }
  }
  .goods-detail-container{
    padding-bottom: 50px;
  }
  .goods-nav{
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
  }
</style>
